From 38323890360fdcf361a2af774a99e10ac9371758 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Fri, 17 Dec 2010 13:22:20 -0800
Subject: [PATCH] fix cgo build

R=r
CC=golang-dev
https://golang.org/cl/3750041
---
 src/Make.pkg                 | 2 +-
 src/pkg/runtime/cgo/Makefile | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Make.pkg b/src/Make.pkg
index e4cdaae30b7..a748ff346db 100644
--- a/src/Make.pkg
+++ b/src/Make.pkg
@@ -114,7 +114,6 @@ dir:
 ifdef CGOFILES
 _cgo_defun.c: $(CGOFILES)
 	CGOPKGPATH=$(dir) cgo -- $(CGO_CFLAGS) $(CGOFILES)
-endif
 
 # Ugly but necessary - cgo writes these files too.
 _cgo_gotypes.go _cgo_export.c _cgo_export.h _cgo_main.c: _cgo_defun.c
@@ -122,6 +121,7 @@ _cgo_gotypes.go _cgo_export.c _cgo_export.h _cgo_main.c: _cgo_defun.c
 
 %.cgo1.go %.cgo2.c: _cgo_defun.c
 	@true
+endif
 
 # Compile rules for gcc source files.
 %.o: %.c
diff --git a/src/pkg/runtime/cgo/Makefile b/src/pkg/runtime/cgo/Makefile
index b825c17805b..3e6ca84a2c0 100644
--- a/src/pkg/runtime/cgo/Makefile
+++ b/src/pkg/runtime/cgo/Makefile
@@ -44,6 +44,10 @@ include ../../../Make.pkg
 ifeq ($(ENABLED),1)
 _cgo_defun.c:
 	echo >$@
+
+_cgo_main.c:
+	echo 'int main() { return 0; }' >$@
+	echo 'void *crosscall2;' >>$@
 endif
 
 $(GOARCH).o: $(GOARCH).S